甲醛对雄性小鼠睾丸中酶活力的影响

Effects of Formaldehyde on Activities of Enzymes in Testes of Male Mice

目的探讨甲醛对雄性小鼠睾丸中酶活力的影响。方法28只昆明种雄性小鼠随机分为4组,每组7只。设低、中、高剂量组分别以0.2、2.0、20.0mg/kg甲醛腹腔注射染毒,每天1次,连续7d,测定睾丸中乳酸脱氢酶(LDH)、葡萄糖-6-磷酸脱氢酶(G-6-PD)、山梨醇脱氢酶(SDH)活力。同时设对照组,腹腔注射生理盐水。结果小鼠睾丸G-6-PD、SDH活力随染毒剂量增大而降低,低、中、高剂量组SDH活力与对照组比较,差异均有统计学意义(P<0.05或P<0.01),低、中、高剂量组LDH和G-6-PD活力与对照组比较,差异无统计学意义(P>0.05)。结论甲醛对雄性小鼠睾丸中的酶具有不良影响,从而产生一定的生殖毒性。

Objective To study the effects of formaldehyde on activities of enzymes in testes of male mice. Methods Male Kunming mice were used. Experimental groups had been exposed to formaldehyde with different doses by i.p. once per day for 7 consecutive days. The formaldehyde doses were 0.2, 2.0 and 20.0 mg/kg body weight. The mice were killed after 7 days of treatment and their testes were fetched out to be made into even slurry and the activities of LDH, G-6-PD and SDH in them were tested. Results The activities of G-6-PD and SDH were decreased with the increasing of doses of formaldehyde. Compared with the control group, the activities of SDH in each exposed group had significantly decreased (P<0.05 or P<0.01). As for LDH and G-6-PD, there were no significant difference between the exposed groups and the control group. Conclusion Formaldehyde has adverse effects on some enzymes in testes of male mice, which will produce reproductive toxicity.